Financial Services, Allowances for Losses (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 03, 2012	Jul. 29, 2011	Aug. 03, 2012	Jul. 29, 2011
Financing Receivable, Allowance for Credit Losses
Balance at beginning of period	$ 192	$ 217	$ 202	$ 241
Recoveries	23	12	36	32
Provision charged to income statement	29	41	66	68
Balance at end of period	189	210	189	210
Principal
Financing Receivable, Allowance for Credit Losses
Charge-offs	(47)	(51)	(98)	(111)
Interest
Financing Receivable, Allowance for Credit Losses
Charge-offs	(8)	(9)	(17)	(20)
Revolving Loans
Financing Receivable, Allowance for Credit Losses
Balance at beginning of period	169	191	179	214
Recoveries	22	11	34	30
Provision charged to income statement	27	45	63	72
Balance at end of period	168	189	168	189
Revolving Loans | Principal
Financing Receivable, Allowance for Credit Losses
Charge-offs	(42)	(49)	(91)	(107)
Revolving Loans | Interest
Financing Receivable, Allowance for Credit Losses
Charge-offs	(8)	(9)	(17)	(20)
Fixed-term loans
Financing Receivable, Allowance for Credit Losses
Balance at beginning of period	23	26	23	27
Recoveries	1	1	2	2
Provision charged to income statement	2	(4)	3	(4)
Balance at end of period	21	21	21	21
Fixed-term loans | Principal
Financing Receivable, Allowance for Credit Losses
Charge-offs	(5)	(2)	(7)	(4)
Fixed-term loans | Interest
Financing Receivable, Allowance for Credit Losses
Charge-offs	$ 0	$ 0	$ 0	$ 0